Hybrid structure of PbS QDs and vertically-few-layer MoS2 nanosheets array for broadband photodetector

doi:10.1088/1361-6528/abd57f

	Hybrid structure of PbS QDs and vertically-few-layer MoS2 nanosheets array for broadband photodetector
	Zhang, Kun 1,3; Feng, Shuanglong 1; Kang, Shuai 1; Wu, Yutong 1,3; Zhang, Miaomiao 1; Wang, Qingshan 4; Tao, Zhiyong 2; Fan, Yaxian 2; Lu, Wenqiang 1
刊名	NANOTECHNOLOGY
	2021-04-02
卷号	32 期号:14 页码:15
关键词	chemical vapor deposition PbS QDs hybrid nanostructure broadband photodetector vertical MoS2 nanosheets
ISSN号	0957-4484
DOI	10.1088/1361-6528/abd57f
通讯作者	Feng, Shuanglong(fengshuanglong@cigit.ac.cn) ; Fan, Yaxian(yxfan@guet.edu.cn) ; Lu, Wenqiang(wqlu@cigit.ac.cn)
英文摘要	A novel three-dimensional (3D) vertically-few-layer MoS2 (V-MoS2) nanosheets- zero-dimensional PbS quantum dots (QDs) hybrid structure based broadband photodetector was fabricated, and its photoelectric performance was investigated in detail. We synthesized the V-MoS2 nanosheets by chemical vapor deposition, using the TiO2 layer as the induced layer, and proposed a possible growth mechanism. The use of the TiO2 induction layer successfully changed the growth direction of MoS2 from parallel to vertical. The prepared V-MoS2 nanosheets have a large specific surface area, abundantly exposed edges and excellent light absorption capacity. The V-MoS2 nanosheets detector was then fabricated and investigated, which exhibits a high sensitivity for 635 nm light, a fast response time and an excellent photoelectric response. The V-MoS2 nanosheets with a height of approximately 1 mu m successfully broke the light absorption limit caused by the atomic thickness. Finally, we fabricated the PbS QDs/V-MoS2 nanosheets hybrid detector and demonstrated their potential for high-performance broadband photodetectors. The response wavelength of the hybrid detector extends from the visible band to the near-infrared band. The responsivity of the hybrid detector reaches 1.46 A W-1 under 1450 nm illumination. The combination of 3D MoS2 nanosheets and QDs further improves the performance of MoS2-based photodetector devices. We believe that the proposed zero-dimensional QDs and 3D vertical nanosheets hybrid structure broadband photodetector provides a promising way for the next-generation optoelectronic devices.
资助项目	Dean Project of Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing[GXKL06190104] ; Dean Project of Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing[GXKL06190105] ; National Natural Science Foundation of China[12064005] ; Western Light Program of the Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000607525300001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/12419]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Feng, Shuanglong; Fan, Yaxian; Lu, Wenqiang
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China 2.Guangxi Key Lab Wireless Wideband Commun & Signal, Guilin 541004, Peoples R China 3.Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China 4.Chongqing Univ, Coll Mech Engn, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Kun,Feng, Shuanglong,Kang, Shuai,et al. Hybrid structure of PbS QDs and vertically-few-layer MoS2 nanosheets array for broadband photodetector[J]. NANOTECHNOLOGY,2021,32(14):15.
APA	Zhang, Kun.,Feng, Shuanglong.,Kang, Shuai.,Wu, Yutong.,Zhang, Miaomiao.,...&Lu, Wenqiang.(2021).Hybrid structure of PbS QDs and vertically-few-layer MoS2 nanosheets array for broadband photodetector.NANOTECHNOLOGY,32(14),15.
MLA	Zhang, Kun,et al."Hybrid structure of PbS QDs and vertically-few-layer MoS2 nanosheets array for broadband photodetector".NANOTECHNOLOGY 32.14(2021):15.